Full view calendar with year, month, week and day views based on templates with Twitter Bootstrap.
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Bootstrap Calendar

A Full view calendar based on Twitter Bootstrap. Please try the demo.

Bootstrap full calendar


Why did I start this project? Well, I believe there are no good full view calendar's out there with native Bootstrap support. In fact I could not find even one. A different UI and UX concept approach is also used.


  • Reusable - there is no UI in this calendar. All buttons to switch view or load events are done separately. You will end up with your own uniquie calendar design.
  • Template based - all view like year, month, week or day are based on templates. You can easily change how it looks or style it or even add new custom view.
  • LESS - easy adjust and style your calendar with less variables file.
  • AJAX - It uses AJAX to feed calendar with events. You provide URL and just return by this URL JSON list of events.
  • i18n - language files are connected separately. You can easily translate the calendar into your own language. Holidays are also diplayed on the calendar according to your language

How to use


You can install it with bower package manager.

$ bower install bootstrap-calendar

Bower will automatically install all dependencies. Then by running

$ bower list --path

You will see list of the files you need to include to your document.

Quick setup

You will need to include the bootstrap css and calendar css. Here is the minimum setup.

<!DOCTYPE html>
	<title>Minimum Setup</title>
	<link rel="stylesheet" href="css/bootstrap.min.css">
	<link rel="stylesheet" href="css/calendar.css">

	<div id="calendar"></div>

	<script type="text/javascript" src="js/vendor/jquery-1.9.1.js"></script>
	<script type="text/javascript" src="js/vendor/underscore-min.js"></script>
	<script type="text/javascript" src="js/calendar.js"></script>
	<script type="text/javascript">
		var calendar = $('#calendar').calendar();

Bootstrap Calendar depends on jQuery and underscore.js is used as a template engine. For the calendar you only have to include the calendar.css and calendar.js files. If you want to localize your Calendar, it's enough to add this line before including calendar.js:

<script type="text/javascript" src="js/language/xx-XX.js"></script>

Where xx-XX is the language code. When you initializing the calendar, you have to specify this language code:

<script type="text/javascript">
	var calendar = $('#calendar').calendar({language: 'xx-XX'});

Feed with events

To feed the calendar with events you should use events_source parameter. It may be a function, array or URL. In all cases you have to set it with valid events array.

See events.json.php file for more details.

start and end contain dates when event starts (inclusive) and ends (exclusive) in Unix timestamp. Classes are event-important, event-success, event-warning, event-info, event-inverse and event-special. This wil change the color of your event indicators.

Feed URL

var calendar = $('#calendar').calendar({events_source: '/api/events.php'});

It will send two parameters by GET named from and to, which will tell you what period is required. You have to return it in JSON structure like this

	"success": 1,
	"result": [
			"id": 293,
			"title": "Event 1",
			"url": "http://example.com",
			"class": 'event-important',
			"start": 12039485678000, // Milliseconds
			"end": 1234576967000 // Milliseconds

Feed array

You can set events list array directly to events_source parameter.

var calendar = $('#calendar').calendar({
    events_source: [
            "id": 293,
            "title": "Event 1",
            "url": "http://example.com",
            "class": 'event-important',
            "start": 12039485678000, // Milliseconds
            "end": 1234576967000 // Milliseconds

Feed function

Or you can use function. You have to return array of events.

var calendar = $('#calendar').calendar({events_source: function(){
    return  [
           "id": 293,
           "title": "Event 1",
           "url": "http://example.com",
           "class": 'event-important',
           "start": 12039485678000, // Milliseconds
           "end": 1234576967000 // Milliseconds

PHP example

Note that start and end dates are in milliseconds, thus you need to divide it by 1000 to get seconds. PHP example.

$start = date('Y-m-d h:i:s', ($_GET['start'] / 1000));

If you have an error you can return

	"success": 0,
	"error": "error message here"

Here is the example of PHP script.

$db    = new PDO('mysql:host=localhost;dbname=testdb;charset=utf8', 'username', 'password');
$start = $_REQUEST['from'] / 1000;
$end   = $_REQUEST['to'] / 1000;
$sql   = sprintf('SELECT * FROM events WHERE `datetime` BETWEEN %s and %s',
    $db->quote(date('Y-m-d', $start)), $db->quote(date('Y-m-d', $end)))

$out = array()
foreach($db->query($sql) as $row) {
    $out[] = array(
        'id' => $row->id,
        'title' => $row->name,
        'url' => Helper::url($row->id),
        'start' => strtotime($row->datetime) . '000'

echo json_encode($out);

Usage warning.

You cannot use the calendar from a local file. The following error will be displayed : Failed to load resource: Origin null is not allowed by Access-Control-Allow-Origin.

Using Ajax with local resources (file:///), is not permited. You will need to deploy this to the web instead.